LXR qemu/include/hw/pci/pci

   1#ifndef QEMU_PCI_BUS_H
   2#define QEMU_PCI_BUS_H
   3
   4#include "hw/pci/pci.h"
   5
   6/*
   7 * PCI Bus datastructures.
   8 *
   9 * Do not access the following members directly;
  10 * use accessor functions in pci.h
  11 */
  12
  13struct PCIBusClass {
  14    /*< private >*/
  15    BusClass parent_class;
  16    /*< public >*/
  17
  18    int (*bus_num)(PCIBus *bus);
  19    uint16_t (*numa_node)(PCIBus *bus);
  20};
  21
  22enum PCIBusFlags {
  23    /* This bus is the root of a PCI domain */
  24    PCI_BUS_IS_ROOT                                         = 0x0001,
  25    /* PCIe extended configuration space is accessible on this bus */
  26    PCI_BUS_EXTENDED_CONFIG_SPACE                           = 0x0002,
  27    /* This is a CXL Type BUS */
  28    PCI_BUS_CXL                                             = 0x0004,
  29};
  30
  31#define PCI_NO_PASID UINT32_MAX
  32
  33struct PCIBus {
  34    BusState qbus;
  35    enum PCIBusFlags flags;
  36    PCIIOMMUFunc iommu_fn;
  37    void *iommu_opaque;
  38    uint8_t devfn_min;
  39    uint32_t slot_reserved_mask;
  40    pci_set_irq_fn set_irq;
  41    pci_map_irq_fn map_irq;
  42    pci_route_irq_fn route_intx_to_irq;
  43    void *irq_opaque;
  44    PCIDevice *devices[PCI_SLOT_MAX * PCI_FUNC_MAX];
  45    PCIDevice *parent_dev;
  46    MemoryRegion *address_space_mem;
  47    MemoryRegion *address_space_io;
  48
  49    QLIST_HEAD(, PCIBus) child; /* this will be replaced by qdev later */
  50    QLIST_ENTRY(PCIBus) sibling;/* this will be replaced by qdev later */
  51
  52    /* The bus IRQ state is the logical OR of the connected devices.
  53       Keep a count of the number of devices with raised IRQs.  */
  54    int nirq;
  55    int *irq_count;
  56
  57    Notifier machine_done;
  58};
  59
  60static inline bool pci_bus_is_cxl(PCIBus *bus)
  61{
  62    return !!(bus->flags & PCI_BUS_CXL);
  63}
  64
  65static inline bool pci_bus_is_root(PCIBus *bus)
  66{
  67    return !!(bus->flags & PCI_BUS_IS_ROOT);
  68}
  69
  70static inline bool pci_bus_allows_extended_config_space(PCIBus *bus)
  71{
  72    return !!(bus->flags & PCI_BUS_EXTENDED_CONFIG_SPACE);
  73}
  74
  75#endif /* QEMU_PCI_BUS_H */
  76